Going in for a blood test.

Well tomorrow 8:30 A.M going to be getting some blood work done to confirm if I am pregnant or not. I am currently 15 days late for my period, something that has never happened to me before, I haven't had any stress or diet change or any change at all in my life, have never been on birth control. As far as symptoms I don't have any symptoms whatsoever.. im very confused and scared for my health, if im not pregnant I will be seeing a doctor ASAP. Wish me luck 🫶🏻 I'll keep y'all updated!